diff --git a/pkgs/tools/misc/openopc/default.nix b/pkgs/tools/misc/openopc/default.nix
index 9da59824e292..8d3850745f11 100644
--- a/pkgs/tools/misc/openopc/default.nix
+++ b/pkgs/tools/misc/openopc/default.nix
@@ -1,7 +1,7 @@
 { stdenv, fetchurl, python }:
 
 let
-  pythonEnv = python.withPackages(ps: [ps.pyro3]);
+  pythonEnv = python.withPackages(ps: [ps.Pyro]);
 in stdenv.mkDerivation rec {
   name = "openopc-${version}";
   version = "1.2.0";
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 3e05819215f7..430cc4ac3865 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -20599,7 +20599,7 @@ in {
     };
   });
 
-  pyro3 = buildPythonPackage (rec {
+  Pyro = buildPythonPackage (rec {
     name = "Pyro-3.16";
     disabled = isPy3k;